Lamp-burner



-(No Model.)

C. C. RICHMOND.

y LAMP BURNER. N0; 257,614. Patented May 9,1882.

N. PETERS. Phullilhognpher. Wnshnglun. D,C.\

UNrTD" STATES" :PATENT OFFICE.

` CHARLES O. RICHMOND, OFI BOSTON, MASSACHUSETTS.

LAMP-BURNER.

SPECIFICATION forming part of Letters Patent No. 257,614, dated May 9, 1882.

Application tiled March 13, 1882. (No model.)

To all whom it 'may concer-n Be itknown that I, CHARLES (l. RICHMOND, of Boston, in the county of Sui'olk and State of Massachusetts, have invented an Improvement in Lamp-Burners, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in whichi- Figure l is a perspective view ot' a burner constructed'in accordance with my invention and applied to a lamp designed for use in a lantern. Fig. 2 is a vertical section through the center ot' the same.

My .present invention has particular reference to that class of burners for lamps used independently or in connection with lanterns in which chimneys are dispensed with; and my said inventionconsists in the combination ct' two features-viz., a perforated cap surrounding the wick-tube and an inverted perforated bell-shaped casing outside of the cap, the base of said cap being secured directly to the lbase of the casing, said arrangement preventing the extinction ofthe light incident to the usual construction of burners when moved in various directions from place lo place.

To enable others skilled in the art to understand and use my invention, I will proceed to describe the manner in which I have carried it out.

In the said drawings, A represents a lampburner having al1-ordinary wick-tube, a, with acollar, b, surrounding it, located near its top, and of such size and shape as to form spaces c between it and the opposite sides ofthe wiel;- tube for the passage of air-currents upward to feed the ame of the lighted wick. Outside the wick-tube is a slottedor perforated cap, d, and outside the 4cap an inverted perforated bell-shaped easing, e, the base ofthe cap resting on and being preferably secured to the base of the easing, thc latter being provided with an interior screw-thread or other means of fastening itto the central portieri, j', of the burner, the lower end of which is provided with the usual thread to admit of" its being screwed into the collar h at the top ofthe A lamp B.

'A lamp-burner having my-two featuresviz., the inverted perforated bell-shaped casin g and the perforated cap, combined and arranged in the manner above described-1. ossesses the following advantages: When the lamp (whether used independently of or inV connection with a lantern-case, and without a chimney) is raised in carrying it the column of air against which it is brought into contact is divided into a` series of currents, some only of which are free to pass through the perforations in the inverted bell-shaped casing, said portion only passing through the slots or perforations in the cap and supplying just sufficient air to maintain the combustion, whereas wereaclosed easing employed instead the greater portion of the column of air would not have an opportunity of flowing off or of being dissipated outwardly at the instant of raising, but would all impinge and concentrate upon the dame, and consequently extinguish it, being driven through the perforated cap d directly thereon. Again, when a burner having my invention applied thereto Dis lowered the column of air disturbed thereby is also subdivided into many currents, some of which, sufficient to maintain combustion, are'freeto pass upward through the perforations in the casing and through the perforations in the cap to the tiame, whereas were an ordinary closed casing an d closed cap employed the air displaced by the lowering of the lamp would be diverted or thrown-off outside the periphery of the casing, resulting in a temporary vacuum,in which the tlame would be extinguished, as oxygen is essential to combustion.

Another advantage resulting from the application ot" my invention is that the expense of chimneys and the inconvenience of adjusting them on or of removing them from the burners is avoided.

I am not aware that a chimney has heretofore been dispensed with where a perforated invertedY bell-shaped casin g, either with or without-a perforated cap, d, is employed. By securing the base of the perforated cap to the perforated inverted casing and providing the inside of the latter with a screw-thread or other suitable fastening, both easing and cap may be removed at one operation. i

I am aware that a perforated cap has been employed in connection with a perforated casing; but in this case a series of supports are interposed between the cap and. the casing,

IOO

these supports elevating the cop n considcrasecured directly to the bottom of said casing, ro ble distance above the latter, thc burner thus as and for the purpose described.

constructed being provided with n cbimneyfitness my hand this 10th dny ol' March, band to enable a chimney to be used thcrewitl1. 1882.

Whnt- I claim its my invention7 and desire to CHARLES C. RICHMOND.

secure by Letters Patent, is-

An inverted perforated bell-shaped casing, In presence otle, in combination with and located outside ot' N. W. STEARNS, n perforated cap, d, the base of said cap being THOMAS W. FAnNsWoR'rH. 

